Dirac neutrinos from Peccei-Quinn symmetry: A fresh look at the axion
Abstract
We show that a very simple solution to the strong CP problem naturally leads to Dirac neutrinos. Small effective neutrino masses emerge from a type-I Dirac seesaw mechanism. Neutrino mass limits probe the axion parameters in regions currently inaccessible to conventional searches.
- Publication:
-
Modern Physics Letters A
- Pub Date:
- July 2020
- DOI:
- 10.1142/S021773232050176X
- arXiv:
- arXiv:1910.02961
- Bibcode:
- 2020MPLA...3550176P
- Keywords:
-
- Peccei–Quinn symmetry;
- axion;
- neutrinos;
- High Energy Physics - Phenomenology;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- High Energy Physics - Experiment;
- High Energy Physics - Theory
- E-Print:
- 6 pages, 3 figures, 2 tables